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If you don't take a break from constant tasks -- such as checking a BlackBerry or tweeting -- you don't give the brain time to rest and consolidate memories and experiences, researchers say. "There are costs to multitasking and not pausing," says Adam Gazzaley, a neuroscientist at the University of California, San Francisco.

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China's biodiesel demand would surge from 1.1 million tons to 8.8 million if the government were to enforce mandates for blended biodiesel. But companies such as Sinopec say they don't want to pay for the needed infrastructure to blend the fuels.

With the search for Malaysia Airlines Flight 370 now entering its fourth week, the public is wondering why airplanes don't have satellite trackers similar to the GPS technology in their phones. The FAA has mandated that commercial aircraft flying in the U.S. install tracking technology by 2020.

The two most deadly types of gastrointestinal infections are often spread by people who don't wash their hands after using the bathroom, according to this article. Health officials say that strains of Clostridium difficile and the norovirus have become more dangerous, and the Centers for Disease Control and Prevention reported that deaths from such infections more than doubled between 1999 and 2007. Nearly 95% of C. difficile infections occur in health care settings.

Scientists say those who multitask a lot are not only less productive and focused -- but they are also more stressed and less likely to be creative, this article says. "We are exposing our brains to an environment and asking them to do things we weren't necessarily evolved to do," says Adam Gazzaley, a neuroscientist at the University of California San Francisco.

The Senate is amending the last piece of the health reform plan and will hand it back to the House for approval after Republican lawmakers cited two minor provisions that reportedly violate reconciliation rules. The changes, which don't significantly affect the legislation, are expected to be finalized today and approved by the House before the weekend.